chore(ci): Tag deno builds with full version, truncate history

[effigies]

We don't have enough git context to properly tag our builds:

❯ deno run -A https://github.com/bids-standard/bids-validator/raw/deno-build/bids-validator.js --version
bids-validator bd30213

This fixes that. We're also pipling 5MB of javascript into each commit of deno-build. Some of it might compress down well enough, but it's unclear what the benefit is of holding onto this history.

The first commit can be used without the second commit, if there's a reason to keep around the history.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.86%. Comparing base (bd30213) to head (c551e07).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1993      +/-   ##
==========================================
+ Coverage   85.68%   86.86%   +1.18%     
==========================================
  Files          91      132      +41     
  Lines        3792     6351    +2559     
  Branches     1220     1524     +304     
==========================================
+ Hits         3249     5517    +2268     
- Misses        457      743     +286     
- Partials       86       91       +5     

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